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Income Taxes (Schedule of Reconciliation of the U.S. Federal Statutory Rate to Effective Tax Rate) (Details)
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Income Tax Disclosure [Abstract]        
U.S. federal statutory rate 35.00% 35.00% 35.00% 35.00%
State income taxes 1.70% 1.80% 1.80% 1.80%
Other 0.40% 0.40% 0.30% 0.20%
Effective tax rate 37.10% 37.20% 37.10% 37.00%